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M41T81SM6FT

更新时间： 2024-09-22 22:10:27

品牌	Logo	应用领域
意法半导体 - STMICROELECTRONICS		闹钟时钟
页数	文件大小	规格书
29页	441K
描述
Serial Access Real-Time Clock with Alarms

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中文翻译

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数据手册

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M41T81SM6FT 数据手册

M41T81S

Serial Access Real-Time Clock with Alarms

FEATURES SUMMARY

■

COUNTERS FOR TENTHS/HUNDREDTHS

Figure 1. Packages

OF SECONDS, SECONDS, MINUTES,

HOURS, DAY, DATE, MONTH, YEAR, AND

CENTURY

■

32KHz CRYSTAL OSCILLATOR WITH

INTEGRATED LOAD CAPACITANCE

(12.5pF) WHICH PROVIDES EXCEPTIONAL

OSCILLATOR STABILITY AND HIGH

CRYSTAL SERIES RESISTANCE

OPERATION)

■

OSCILLATOR STOP DETECTION

(MONITORS CLOCK OPERATION)

SERIAL INTERFACE SUPPORTS I C BUS

(400kHz PROTOCOL)

ULTRA-LOW BATTERY SUPPLY CURRENT

SO8 (M)

8-pin SOIC

OF 0.6µA (typ)

■

2.0 TO 5.5V CLOCK OPERATING VOLTAGE

AUTOMATIC SWITCHOVER AND

DESELECT CIRCUITRY (FIXED

REFERENCE) WHICH PROVIDES FULL

OPERATION IN 3.0V APPLICATIONS)

–

= 2.7 to 5.5V

SOX18 (MY)*

18-pin (300mil) SOIC

with Embedded Crystal

2.5V ≤ V

≤ 2.7V

PFD

■

POWER-DOWN TIME STAMP (HT BIT)

WHICH ALLOWS DETERMINATION OF

TIME ELAPSED IN BATTERY BACK-UP

■

BATTERY LOW FLAG

PROGRAMMABLE ALARM AND

INTERRUPT FUNCTION (valid even during

Battery Back-up Mode)

■

ACCURATE PROGRAMMABLE

WATCHDOG TIMER (from 62.5ms to 128s)

SOFTWARE CLOCK CALIBRATION (TO

COMPENSATE FOR CRYSTAL DEVIATION

DUE TO TEMPERATURE)

■

OPERATING TEMPERATURE OF –40 TO

85°C

PACKAGE OPTIONS INCLUDE AN 8-LEAD

SOIC OR 18-LEAD EMBEDDED CRYSTAL

SOIC

* Contact local ST sales office for availability.

September 2005

Rev 4.0

1/29

12 3 4 5 6 7...29

中文翻译

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